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(No Model.) v 2 Sh eets-Sheet 1.

R. J. MALCOLM.

STEAM 0R HOT WATER GENERATOR.-

No. 365,347. Patented June 21, 1887.-

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. STEAM 0R HOT WATER GENERATOR. N0.,36.5,34'7.

(No Model.)

Patented June 21, 1887.

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' UNITED i STATES PATENT OFFICE.-

ROBERT J. MALCOLM, OF CINCINNATI, OHIO, ASSIGNOR, BY- DIRECT AND ESNEASSIGNMENTS, OF TwO-THIRDS To JOHN D. ABRAHAM AND NICHOLAS K. AYLWARD,BOTH F SAME PLACE.

STEAM OR HOT-WATER GENERATOR.

SPECIFICATION forming part of Letters Patent No. 365,347, dated June21,1887.

Application filed April 19, 1886. Serial No. 199,293. (No model.)

To aZZ whom, it mag concern.-

Be it known that 1, ROBERT J. MALCOLM, a resident of Cincinnati, countyof Hamilton, and State of Ohio, have invented certain new and usefulImpro'vements in Steam or Hot: Water Generators, of which thefollowingis a specification.

The several features of my invention and the various advantagesresulting from their IO use, conjointly or otherwise,will be apparentfrom the following description.

In the accompanying drawings, formingpart of this specification, Figure1 is a central vertical sectional elevation of my improved gen- 1erator. Fig. 2 is a top-view of the base of the generator. Fig. 3 is across section taken at the line as as, Fig. 2. Fig. 4 is a sectionalperspcctive of the door and door-frame of the generator. Fig. 5 is a topviewof the annular base of the generator. Fig. 6 is a cross-sectiontaken at the line 3 y, Fig. 5. Fig. 7 is a view of the under side of theannular top of the generator. Fig. 8 is an inverted crosssection takenat the line 2 z of Fig. 7. Fig. 9 is a top view of the upper spider.Fig. 10 is a front elevation of the generator with the front. half ofthe casing removed.

The hollow ring A is provided with anumber of pipes, at, whichcommunicate with the 0 space within the ring A and extend upwardly fromthe ring. The spider S consists of a central chamber, A, from whichpipes a project radially. These pipes a connect with the vertical pipesto. The inverted spiderS is simi- Tar in construction to the spider S,being provided wit-h radial pipes b and vertical pipes b. The spider Srests upon the spider S and communicates with the spider S. The verticalpipes I) from the spider S extend upwardly to and enter the hollow ringB. The steampipe G leads out from the hollow ring B. The generator restson the base D and is surrounded by the casing O. The base D supports thegrate E under the opening in the annular r p The casing is provided withthe door 0, and the opening opposite the door 0' is surrounded by thehollow frame a, with which the pipes acommunicate. The smoke-pipe Fleads from the top of the generator to an ad jacent flue. The feed-pipeG enters the ring A of the' generator and derives its feed-water fromany convenient source.

The mode of using the generator is as follows: Water is fed through thefeed-pipe G* into the pipes of the generator. Fire is now started in thegenerator on the grate E, fuel being fed through the door 0. The fire,coming in direct contact with the tubes or pipes u, soon raises thecontained water to any desired temperature,or-converts it into steam.The use for which I have especially intended this-generator is as theheater in a system of hot-water heating. It may also be employed as asteam-generator, either for use in a system of steam-heating or tosupply steam for other purposes. 7 What I claim as new, and desire tosecure by Letters Patent, is-

1. In a hot-water or steam generator, the combination of the annularpipes A and B, the vertical pipes a and I), and the spiders S and S,provided, respectively,with the radial pipes (Hand 12, substantially asand for the purposes specified.

2. In a hot-water or steam generator, the combination of the annularpipes- A and B, the vertical pipes a and b, the hollow frame a,communicating with pipes a, the spiders S and S, provided, respectively,with the ra dial pipes at and I), and easing (J, substantially as andfor the purposes specified.

3. In a hot-water or steam generator, the combination of theannulampipes A and B, the vertical pipes a and b, the hollow frame a,communicating with pipes a, the spiders S and S, provided,respectively,with the radial pipes a and b, casing G, and base D, havinggrate E, substantially as and for the purposes specified.

ROBERT J. MALCOLM.

Attest:

J No. W. STREHLI, M. M. SMITH.

